A Latin Romeo is finished (3,4)
I believe the answer is:
all over
'is finished' is the definition.
(similar in meaning)
'a latin romeo' is the wordplay.
'latin' becomes 'l'.
'romeo' becomes 'lover' (Romeo can mean a male lover).
'a'+'l'+'lover'='ALL-OVER'
(Other definitions for all over that I've seen before include "covering everything" , "Finished" , "typically" , "Excessively attentive" , "very characteristically" .)